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A QoS-Aware Packet scheduling mechanism in Cognitive Radio Networks for Smart Grid Applications

China Communications 2016年第2期13卷 68-78页

作者： XU Siya WEI Lei LIU Zhu GUO Shaoyong QIU Xuesong MENG Luoming State Key Laboratory of Network and Switching Technology Beijing University of Posts and TelecommunicationsBeijing 100876China Information&Telecommunication Branch of Nanjing Power Supply Company of State Grid Jiangsu Electric Power Company Nanjing 210008China State Grid Information&Telecommunication Co. Ltd.Beijing 100031China

Cognitive radio sensor network is applied to facilitate network monitoring and management, and achieves high spectrum efficiencies in smart grid. However, the conventional traffic scheduling mechanisms are hard to provide guaranteed quality of service for the secondary users. It is because that they ignore the influence of diverse transition requirements in heterogeneous traffi c. Therefore, a novel Qo S-aware packet scheduling mechanism is proposed to improve transmission quality for secondary users. In this mechanism, a Qo S-based prioritization model is established to address data classification firstly. And then, channel quality and the effect of channel switch are integrated into priority-based packet scheduling mechanism. At last, the simulation is implemented with MATLAB and OPNET. The results show that the proposed scheduling mechanism improves the transmission quality of high-priority secondary users and increase the whole system utilization by 10%.

关键词： smart grid cognitive radio sensornetworks (CRSN) quality of service (QoS) scheduling mechanism

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TaraxOS: An Operation System for Wireless Sensor Networks

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Journal of Electronic Science and Technology of China 2009年第3期7卷 202-206页

作者： Wen-Yong Wang Wen-Gang Han Yu Xiang The authors are with Software Engineering Research Center University of Electronic Science and Technology of China Chengdu 610054 China

operation system （OS）, named TaraxOS for wireless sensor networks is proposed. The functions of the TaraxOS such as interrupt, memory management and scheduling mechanism are researched and implemented. After introducing the node＇s working flow, the performances of the TaraxOS are analyzed and some limitations of the scheduling mechanism are discussed. The obtained results show that the proposed TaraxOS has some desirable characteristics including small code capacity, low power consumption, quick response and robustness.

关键词： Data processing interrupt memorymanagement scheduling mechanism TaraxOS

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